11050473781 has 4 divisors (see below), whose sum is σ = 11106004000. Its totient is φ = 10994943564.

The previous prime is 11050473779. The next prime is 11050473821. The reversal of 11050473781 is 18737405011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11050473781 - 2¹ = 11050473779 is a prime.

It is a super-2 number, since 2×11050473781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11050473781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11050473481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27764811 + ... + 27765208.

It is an arithmetic number, because the mean of its divisors is an integer number (2776501000).

Almost surely, 2^11050473781 is an apocalyptic number.

It is an amenable number.

11050473781 is a deficient number, since it is larger than the sum of its proper divisors (55530219).

11050473781 is an equidigital number, since it uses as much as digits as its factorization.

11050473781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55530218.

The product of its (nonzero) digits is 23520, while the sum is 37.

Adding to 11050473781 its reverse (18737405011), we get a palindrome (29787878792).

The spelling of 11050473781 in words is "eleven billion, fifty million, four hundred seventy-three thousand, seven hundred eighty-one".